Explosive composition



1 To all whom it may concern:

UNITED, sr

WILLARD C. COPE, OF WOODBURY,-NEVT rs I Tsar

JERSEY, assrenon T E. I. no Pour DE NEIVIO'URS &. COMPANY, OF' WILMINGTON, DELAWARE, A CORPORATION OF Application 'filed June 13, 7

Be it known that I, WILLARD 0. Corn, of Woodbury, .in the county of Gloucester and in the State or New Jersey, have invented a certain new and useful Improvement in Explosive Compositionaand do hereby declare that the following is a full, clear, and

exact description thereof.

-My invention relates particularly to detonating explosive compositions which are so treated that they willremain unchanged for long periods of time, but it relates especially to the treatment of dynamites of vadeterioration of the same.

cially dynamites,which have beenso treated.

rious-kinds in such a manner as to prevent The object of my invention is to provide detonating explosive compositions, and espeas to prevent leakiness in the same,-that is to say, so as to avoid the exudation of the liquid constituents from the compositions upon standing. It has been found that detonatingexplosive compositions, andparticularly dynamites, tend'to become leaky after a period of time, so that they become, for this reason, ineffective for the purpose for which they were made. I have discovered that this leakiness is caused by deterioration of the explosive composition, due to the presence of living organisms. It is, therefore, the object of my invention to treat such explosive compositions, and particularly dynamites, in such a manner as to prevent the deterioration of the same, and in carrying out my invention I treat said compositions in such a manner as to inhibit the growth of the living organisms therein.

Further objects of my invention willappear from the detailed description thereof contained hereinafter.

While my invention is capable of being carried out in many different ways, for the purpose of illustration I shall describe herein onlycertain ways of carrying out the same.

"comprised; of:

'ExrLosrvE coMPosrrIoN.

Letters Patent. Pittfihtfid 13, I921.

1918. Serial No. 239,774v

'zoate, boric acid, borax, 'sodiumfluorid, mercuric iodid, or a large quantity of sugar. The above mentioned aromatic acids or. their salts not only inhibit thegrowth of living organisms but also have a plasticizing action, and make possible the addition to the gelatin dynamite of more wood pulp or other carbonaceous combustible material than would otherwise be the case, such a ddi-. tion resulting in a lower density gelatin dynamite which remains sensitive to detonation for a longer period of time.

One exampleof a gelatin dynamite made in accordance with my invention'would be %iby weight In the above composition, a part of th nitroglycerin can be replaced by a corre sponding quantity, up to 2%, of a suitable nitro-aromatic compound, such for example as dinitrotoluol; th ammonium nitrate could be replaced with trinitrotoluol; the sodium nitrate could be replaced with potassium nitrate; the wood pulp could be substituted by another organic filling material; the wheat flour couldbe substituted by any other similar material, such for example as vegetable ivory. Furthermore, many other substitutions could be made in the above composition, as said composition is cited merely as one of many difierent examples. As another example of a dynamite which may be made in accordance with my invention, I may make use of the following:

Nitroglycerin 22.0% by weight Ammonium nitrate 26.0% by weight Sodium nitrate 38.0% by weight Sulfur 2.0% by weight Wood pulp 10.8% by weight Chalk 1.0% .by weight Nitroglycerin' i 30.00% by weight Nitrocellulose .8 by weight Ammoi1ium nitrate 5.0 %*by weight Sodium nitrate 50.7 by weight .Wood pulp; .5 by weight Wheat flour V 9.0 by weight Sulfur, 2.8% by weight for example, of salicylic acid is the equivalent of freesalicylic acid in my new composition.

Compositions which have been made in this way, that is to sa by addition of the salicylic acid or one 0% be found to retain their form and condition the same as when first manufactured and will no longer be subject to the leakiness' 1. A detonating composition containing an organic filling material and an aromatic :acid adapted to inhibit the growth of living organisms.

'2. A gelatin dynamite containing an organic filling material and an aromaticiacid adapted to inhibit the growth of living organisms.

. n3.- A detonating explosive composition con- Witnesses:

taining an organic filling material and a uantity of salicylic acid adapted to inhibit t egrowth of living organisms.

the other preserva-' tive substantances as above referred to, will" 4. A dynamite containing an organic fill- A 6. An explosive composition comprising nitroglycerin, nitrocellulose, a nitrate, an

organic filling material, and'ja quantity of.

salicylic acid adapted to inhibit the growth of living organisms.

7. An explosive composition comprising nitroglycerin, nitrocellulose, a. nitrate, an organic filling material, sulfur, chalk, and a quantity ofsalicylic acid adapted to inhibit the growth of living organisms. l

8. An explosive composition comprising nitroglycerin, nitrocellulose, a nitrate, wood pulp, wheat flour, and aquantity of salicylic acid adapted to inhibit the growth of living organisms.

9. An explosive composition comprising nitroglycerin, nitrocellulose, a nitrate, wood pulp, wheat flour, sulfur, chalk, and a quantity. of salicylic. acid adapted to inhibit the growth of living organisms.

In testimony thatI claim the foregoingI have hereunto set my hand.

WILLARD o; COPE.

. J. M. CoNomL,

W. L. ARMSTRONG. 

